Throw-out mechanism



E. E. WINKLEY. THROW-OUT MECHANISM. APPLICATION FILED MAY21, 1917.

1 ,334;,4;77. I Patented Mar. 23, 1920.

4 SHEETSSHEET I.

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fgz'tness E. E. WINKLEY. THROW-OUT MECHANISM. APPLICATION FILED MAY 21, 1917.

Patented Mar. 23, 1920.

4 SHEETS-SHEET 2- E. E. WINKLEY.

THROW-OUT MECHANISM. APPucAfloN man MAY 21, m7.

1,334,477. Patented Mar. 23, 1920.

. 4 SHEETS-SHEET 3- 1 7 54 /4O 2 6 M/ 62 /4Z Jiz 0 an tol- E. E. WINKLEY.

THROW-OUT MECHANISM.

APPLLCAATION FILED MAY 21.1917.

1,334,477. Patehted Mar. 23, 1920.

4 SHEETS-SHEET 4.

EEAsj'rns wIiIKL-Er, or mm, rirnsssc rnsnrrs, sssreuon, BY MEsnE nssusrn- MENTS, r UNITED SHOE MACHINERY conronarron, 0E PATTERSON, NEW JERSEY, A CORPORATION on NEW JEnsE'r.

renew-our meshes-M.

Specification of Letters Patent.

Patented Ma1n23, 1920.

Application filed May 21, 1917. Serial No. 169,903.

1 a all whom it may concern Be it known that I, Eims'rus E. WINKLEY, a citizen of the United States, residing at .lzynn, in the county of Essex and State of ll lassachusetts, have invented certain new and useful Improvements in Throw Out ll ilechaniszn; and I do hereby declare the following to be a tulh clear, and exact descript-ion ot the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to throw-out mechanism tor the purpose of rendering ineffective the operative instrumentalities of a mixchine, whenever necessary because of the absence of material to be operated upon or for any other reason.

One object of the intention is to produce throw-out mechanism applicable particularly to machines in which a crank-motion is employed to transmit power to the 0perative instrunientalities. To this end the invention comprises a novel construction by which the link which connects the crank with the parts actuated thereby may be rendered temporarily ineffective, so as to interrupt the transmission of power without arresting the motion of the crank.

nether object of the invention is to pro duce throw-out i'nechanism particularly suitable for use in a. heel-compressing machine of the type illustrated inLetters Patent of the i nitcd Eitates No. 776,875, granted December 6 190 to E. A. Tripp. In 1nachines of this type the heel-compressing instrnmentalities are actuated inin'iediately by a toggle, which toggle is actuated, in turn, by power-mechanism including a fly-wheel. in e ccordancc with the present invention the machine is thrown tcnuiorarily out of operation, without arresting the i'uovenient of the iower-iuechanisui, by rendering; inciiective the connecting-means by which power is transmitted from the power-niechanisin to the meg-1e.

Uther objects or the invention, and the cat-lures 0t construction and operation which they are attained, will be set forth hereinafter, in the description of the illustrated embodiment of the invention.

In the accompanying drawings illustrating the In'cferred form of the invention for carrying;- out the above objects, Figures 1 and 2 are, respectively, a side-elevation and a planview of a machine embodying the present invention; Fig. 3 is a plan-view of details of the automatic means for throwing the throw-out mechanism into operation; Fig. i is a side-elevation, partly in vertical section on line i s in Fig. 2, showing particularly the connections between the crank-shaft and the toggle; Fig. 5 is a side-elevation of certain j iarts shown in Fig. 3; Fig; 6 is a sideelevation, in section on the line 6-6 in Fig. 2, oil the parts shown in Fig. L, in a different position oi opeintion; and Figs. 7 and 8 are detail-views, in section on the lines 7--7 and 8-8, respectively, in Fig. 6, hut on a larger scale than the latter figure.

The invention is illustrated as employed in connection with a heel-co1npressing machine of the type disclosed in the said patent to Tripp; This machine has the usual cross-head 10 (Fig. 2) which slides between vertical guides (not shown) formed in the uprights 12 of the frame of the machine. The cross-head actuated by the usual toggle 1.5L (Fig. 1% driven by power-mechanism including a horizontal crank-shaft 16. This crank-shaft is geared to an intermediate shaft 1'7, which is also geared in the usual inaiimer to a drive-shaft 19, and the drive-shaft is provided with the usual flywheel 21 for carrying the molding instru- 1iientalit'ic's smoothly through that portion of their cycle of operations in which their movement is resisted by the pressure of the heel which is being compressed.

The drive-shaft 19 may be actuated in any suitable manner. ldenns for this purpose are slunvn eem i-ieinga shaft 20, which is geared to the drive-shaft and is provided \vith a sprocket-wheel 2-2 by which it in ay be connected with any suitable source or power, through a sprocket-chain 2d.

The c'rank shaft' 16 has the usual crankdisks 26 (Fig. 2) which support, and are connected by, a crank-pin 28 (Figs. 4 and 6), and this crank-pin is connected, by a link or pitman 30, with the central pivot of the toggle, so as to buckle and straighten the toggle in the usual manner to lower and raise the cross-head.

A feature oi the present invention resides in the peculiar construction of the pitman 36, this construction being such as to permit thepitman to be rendered, at will or through automatic means, ineffective to transmit power from the crank to the toggle, notwithstanding the continued rotation of the crank.- shaft. The rear end of the pitman is greatly enlarged and has the form of a generally circular housing 32 (Fig. 6) which,

for convenience in assembling the parts, is

made in halves, as shown in Figs. 7 and 8, these halves being secured together by screws 36. The two parts of the housing 32 are'inwardly extended at the sides to form I annular flanges 34- with an intermediate space of generally annular form.

The crank-pin 28 has a bearing in a disk 1 38 located in the circular opening within the side flanges 34 of the housing, and the disk is retained against lateral movement within the housing by two annular plates 40, which are fixed to the sides of the housing by screws 42, the inner margins of these plates overhanging the margins of the disk (see Fi 8 The bearing for the crank-pin is located eccentrically in the disk 38, at a distance from the center of the disk equal to the length of the crank, that is to say, to the distance of the axis of the crank-pin from the axis of the crank-shaft (see Fig. 6). It will be apparent, accordingly, that if the housing 32 be arrested in a position in which the axis of the disk coincides with the axis of the crank-shaft, while the disk is free to rotate in the housing, the crank-shaft may then rotate freely, causing the disk to rotate in the housing but producing no movement of the housing or the pitman as a whole.

During the normal operation of the I mechanism the efiect just described is prevented by means which retain the disk 38 againstrotation in the housing. The sideflanges 34 are provided, at one point, with radial. slots 44 in which a transverse clutchroller 46' (Figs. 6 and 7) is mounted, and the disk is also provided, at its periphery, with a transverse recess 48 (Fig. 4) adapted to receive the clutch-roller. When the roller is retained in this recess it acts as a positive lock between the disk and the houslwo springs 50, fixed to the disk 38 and arranged in peripheral recesses therein (see Figs. 6 and 7) bear against the clutch-roller and tend to move it outwardly in the slots 44, so as to disengage it from the recess 48. The movements of the clutch-roller are controlled, however, by a controller-ring 52 which is mounted loosely in the space hetween the side-flanges 34 of the housing and acts as a bearing for the disk 38. This ring is provided with a recess 54 which has a cam-surface operable upon the clutch-roller. As shown in Fig. 6, while the left-hand end of the recess 54 is deep enough to permit disengagement of the roller from the recess 48, the right-hand end is so shallow that when in engagement with the roller it looks it in the recess 48. Accordingly, by a slight partial rotation of the controller-ring 52 within the housing 32, the clutch-roller may be either locked in operative position or released so as to be thrown outwardly by the springs 50.

The controller-ring is normally held in the position shown in Fig. 6, in which the clutch-roller is held in operation. For this purpose the controller-ring is provided with a shoulder 56 which is free to move in an enlargement, or recess, 58 formed in the housing, and the projection 56 is connected to one end of a tension-spring 60, which passes through an opening in the housing and is attached, at its other end, to the pitman. This spring tends constantly to draw the controller-ring to, and retain it in, the position of Fig. 6.

The controller-ring is moved in the opposite direction by extraneous means. For this purpose it is provided with a second shoulder 62 6) n'iovable in a second recess 64 in the housing, and a pin 66, screwed into the shoulder 62, extends outwardly through an opening in the housing so as to project beyond the periphery thereof. This pin cooperates with a detent-melnber 68 which is in the form of a yoke, and which is mounted to swing upon two eoaxial pivot-studs 70. These studs are fixed in uprights 71 on the frame of the machine at opposite sides of the pitman and the crank-disks (see Fig. 2).

The detent 68 is provided with a shoulder 72 which cooperates with the pin 66 when the detent is swung to the position shown in Fig. 4. Accordingly, if the (rank-shaft 16 be rotated in acontra-clockwise direction the pin 66 will encounter the shoulder 72 and be arrested thereby, with the result that the normal movement of the controllenring in unison with the housing is prevented. This causes a relative movement oi. the coutroller-ring in the housing in a direction to release the clutch-roller 46, which is thereupon thrown ont of operation by the springs 50, and the disk 38 is then free to turn within the housing. The pin 66 and the detent are so located that the action just described takes place at the moment when the axis of the disk coincides with the axis of the crank-shalt,- as shown in Fig. 4,1Vhltll1 occurs at a time when the toggle 14; has been buckled sufliciently to lower the cross-head and thereby move the heel-compressing dies out of cooperative relation to each other.

In order to arrest the movement of the pitman positively at the same moment that the clutchroller 46 is released, the detent is provided with a lug 74; arranged to cooperate with a shoulder 76 suitably located upon the periphery oi the housing, as shown in Fig. 41. The parts when arrested, as just described, are in position to permit continned rotation of the crank-shaft and tree rotation of the disk 38, while no movement is imparted to the pitman, and consequently the compressing dies remain inoperative.

It will be apparent that the throw-out mechanism just described is applicable to various machines operated by crank-meclt anism, and that the detent may be throu n into and out of operation in various manners. here this mechanism is employed, as in the present instance, in a heel-com- 'n'essing machine, it is proposed to control the detent automatically, by means asso ciated with mechanism for feeding a succession of heels to the machine, these means operating automatically upen any interruption inthe supply of heels so fed. In this aspect of the invention the present construction is to some extent similar to that dis closed in a co-pending application Serial No. 185,500 filed August 10, 1917, by the same applicant, in which application the general arrangement for interrupting autoi'natically the operation of the heel-compressor is more particularly claimed.

The illustrated heel coinpressor is shown as provided with automatic means for feeding to it a succession of heels, these means being the same as those disclosed in Letters Patent of the United States No. 1,213,052 granted to the present applicant January 10, 1917. The heels are brought to the machine on an endless chain-conveyor 7 S (Fig. 1), of which each link in the upper stretch supports a heel 80 in inverted position. The chain is supported by sprocket-wheels 82, mounted on a shaft 84: which has hearings on the fixed frame of the machine, Each heel, in. turn, is removed from the chain by automatic transferring mechanism 86, which operates in timed relation with the opera tion of the heel-compressor and places the heel upon the teed-slide 88 (Fig. 2) oi the latter by which it is delivered, in the usual way, to the compressing dies. As the trans 'lerring-mechanism constitutes no part of the present invention, and is fully disclosed in the said Patent No. 1,213,052, it need not be described herein. Asstated in said patout it is to be understood that the conveyor 78 is actuated in timed relation to the cycle 01 operations of the heel-compressor, so as normally to supply heels at a rate suitable to the speed of operation of such machine.

- In the present macliine the throw-out mechanism is controlled by automatic means which detect any hiatus or interruption in the supply of the heels upon the conveyorchain. For this purpose two feelers 90 (Fig. 2) are employed, in the form of trips fixed to the upper ends oi. two parallel rock-shafts and 94: which turn in bearings on the frame of the machine. These feelers are arranged to be engaged by each heel upon the each other after the passage of each heel.

Directly below the shaft 84 a shaft 102 j ournaled, and it is connected with the shaft 84. by slnocket-wheels and achain 104, so as to be rotated in unison therewith. The shaft 1.02 actuates the mechanism by which the detent 68 is controlled, and by which the time of operation of the detent is directly correlated with the passage oil the heels through the compressor. This mechanism comprises a disk 106 (Figs. 1, 3 and 5), fixed on the shaft 102 and provided with a series of: pins 108 which slide longitudinally in sleeves integral with the disk. Spring-pressed plungers 110, mounted to slide in the disk, bear frictionally against the sides of the respective pins, so that they tend to remain in any position into which they have been moved within the sleeves.

The pins 108 are employed as indicat rs to register the presence or absence of a heel upon each link of the conveyer-chain, the rate of progression of the indicator-pins past any givenlpoint, as the disk rotates, being the same as therate of progression of the chairlinks 78, so that during the effective part of its path of movement each indicator pin is representa tire of a heel passing through the machine from the point of operation of the feelers 90 to the compressing dies.

In order that the indicator-pins may be set tl'irough the action of the feelers 90, an arm 112 is mounted upon a stationary pivot 114E adjacent the disk 100, and this arm has a beveled surface (Fig. which, when the arm is in theposition otFigs, 3 and 5, cn-

gages the end of each pin as it passes and presses 1t outwardly (a. 0. toward the observeras shown in Figs. 1 and 5.) The arm 112 is brought to the position shown when- 7 everthe feelers are spread apart by a heel,

owing to the factthat the arm 112 is connected to the rock shaft 94 through a rod 118. One end of this rod is pivoted to the arm while-the other end slides through an opening in an arm 116 (Fig. 3) fixed to the rock shaft. A collar 119, engages the arm 116 on on'e side, while a spring 120 bears against the other side of the arm and against a nut 122 on the end of the rod. By this arrangement the arm 112 is moved positively to the operative position of Figs. 1 and 5 at the passage of each heel onthe conveyor.

The indicator pins coiiperate with an arm 124 which is fixed on a short horizontal rockshaft 126 journaled alongside the disk 106.

This arm has, at its inner surface, a channel 128 which is, normally traversed by the ends of the indicator-pins when in the position to which they are brought by engagement with the wedge arm 112. The channel is of such length that as one pin leaves it another is about to enter it, so. that so long as a constant succession of heels is supplied to the conveyer, and the indicator pins are set accordingly, the arm 124 is held immovable in the position shown in Fig. 5. A second arm 132 is fixed to the rock-shaft 126, however, and a spring'134 (Fig. 1), attached to this arm, tends to raise it and thereby swing the arm 124 to the right. Accordingly, if a heel is missing from the succession upon the conveyer-chain, and one of the indicator-pins thus fails to be pushedoutward by the arm 112, the arm 124 is released upon the emergence of the last preceding pin from the channel 128, whereupon it is swung to the right, as shown in Fig. 1.

The movement, just described, of the arm 124 causes the throw-out mechanism to become operative. I The arm 132 is pivoted to the lower end of a link 136, of which the .upper end is pivoted to an arm 138 (Fig. 1).

This latter arm is fixed on the end of a transverse rock-shaft 140 journaled in bearings on the frame of, the machine, and this rock-shaft carries two rearwardly projecting arms 142 (Fig. 2) each of which is con nected to the upper link 144 of one of a pair of similar toggles, arranged at opposite sides of the machine. The lower link 146 of each toggle is pivoted'to a stud 148 (Figs. 4 and 6) on one of the uprights 71. The middle pivot 150 of each toggle is connected to one of the two parallel links 152 which are connected, at their rear ends, to the detent 68 by means of a pivot rod 154 journaled transversely in'the detent.

As shown in Fig. 6 the toggles 144146 are in a position such that the detent is swung back to inoperativeposition, but when the arm 124 swings to the right, as before described, the rising movement of the arm 132,

- of each of the two toggles to have a cranklike action upon the corresponding link 152 and thus draw the detent forwardly into operative position. Accordingly, the effective operation of the heel-compressor is interrupted or modified, and the various parts of the mechanism are so arranged that this interruption occurs at the time when the cross-head has descended after the completion of the compressing operation upon the last heel withdrawn from the conveyor, by the transferring mechanism 86, immediately preceding the hiatus in the succession of heels upon the conveyer.

The interruption of the operation of the compressor is not permanent, but is timed to continue only for a number of cycles corresponding to the number of heels absent from the conveyer. In case only one heel is absent from the conveyer, for example, the arm 12 4, after having swung to the right in consequence of the failure of the arm 112 to set one of the indicator-pins in its out ward position, will presently be swung back againby the engagement, with its projecting extremity 156 (Fig. dicator-pin in succession, since this pin will have been set outwardly by the wedge arm 112, and in such a case the detent 68 will be thrown to inoperative position after it has arrested-the operation of the machine for one cycle only. If the hiatus in the succession of heels embraces more than one heel the number of cycles during which the machine is rendered inoperative will be equal to the number of heels missing, as it will continue so long only as the indicator-pins are not set outwardly in the normal manner.

Each indicator-pin, after it has performed its function, is restored to its original inwardly projecting position by engagement with the inner surface of the arm 124, this surface being inclined in the proper direction to slide the pin back to the inner side of the disk 106 as shown in Fig. 3.

An important advantage of the present throw-out mechanism resides in the fact that it does not require a stoppage of the machine as a whole, but merely a modification of its operation which permits the power-mechagiism, and particularly the heavy fly-wheel 21, to continue in normal operation. Furthermore, it acts to connect the crank with, and disconnect it from, the toggle 14 by which the cross-head is actuated, at a time when this toggle and the 5), of the next iuexact number of cycles correspondingto the number of heels which may be missing from the conveyer. It 1t were necessary to stop the entire machine in such a case it would,

be impossible to resume its operation immediately upon the resumption in the succession of heels, owing to the inertia of the parts which would have to be started.

The invention is not limited to the em bodiment thereof hereinbefore described and illustrated in the accompanying drawings, but it may be embodied in various other forms Within the scope of the following claims.

-W hat is claimed as new is 1. A heel-compressor having, in combination, compressing members, a continuously operating power-mechanism, normally operative driving connection between said members and said powar-mechanism for continuously actuating said members through periodic cycles ol operation, and automatic means for interrupting said driving connection when the compressing members occupy their open positions and during the continued operation of said power-mechanism,

2. A heel-compressor having, in combination, compressing members, a toggle for actuating said members, a continuously operating crank-shaft, a normally operative driving connection between. said toggle and said crank-shaft for continuously operating said toggle and said compressing members through periodic cycles of operation, and automatic means for rendering said driving connection inoperative to arrest the operation of said toggle and compressing mom here during the continued operation of said crankshaft.

3. Throw-out mechanism having, in combination, a continuous y rotating crank, a driven member, a two part driving connection between the crank and the driven member, and means for normally preventing relbination, a crank; a driven member; a pitman connected to the driven member; a connecting-member rotatably mounted in the pitman and having a bearing, in which said crank turns, located at a distance, from the axis of rotation of the connecting-member, equal to the length of the crank; means for normally retaining the connecting-member against rotation relative to the pitman; and means for throwing said retaining means out of operation and for arresting movement ojlthe pitman in a position in which the axes of rotation of the connecting-member and the crank coincide.

5. In a heebcompressor comprising dies of which one is movable toward and from the other to compress and release a heel between the dies, and power-mechanism, including a fly-wheel, 'lor actuating the movable die; normally operative power-transmitting connections between the powermechanism and the movable die to continuously reciprocate said die, and throw-out mechanism operable on said connections to modify their action so as to prevent move ment of the movable die to heel-compressing position during continued operation of the power-mechanism.

6. A heel-compressor having, in combination, relatively movable compressing memhers, a continuously operating power mechanism, means including a normally rigid twopart driving pitman connected between said power mechanism and one of said compressmg members for continuously reciprocating said compressing member, and means for disconnecting the component parts of said driving pitman to interrupt the operation of the movable compressing member during the continued operation of said power mechanism. 7

7. A heel-compressor having, in combination, relatively movable compressing members, a toggle for actuating one of said mem bers, a continuously operating crank-shaft, normally operative disengageable driving means for connecting said crank-shaft to said actuating toggle and continuously operating the movable compressing member through eriodic cycles, and means to disengage said last means when said compressing members are in open position.

8. Throw-out mechanism having, in combination, a continuously rotating crank, a driven member, and means for transmitting power between said crank and said driven member comprising a pitman having a circular recess in the crank end thereof, a rotatable disk disposed therein and eccentrically connected to said crank, means for normally connecting said disk and said pitman whereby said driven member is continuously operated through periodic cycles, and means for rendering said connecting means inoperative to arrest the operation of said driven member.

9. A heel-compressor having, in combina 'tion, compressing members, a continuously interrupting said driving connection during the continued operation of said powermechanism, whereby said compressmg members are rendered inoperative.

'10. A heel-compressor having, in combination, compressing members, means for supplying heels to said compressing members, a continuously operating poWer-1necl1- anism, a normally operative driving connection between said members and said powermechanism for continuously actuating said members through periodic cycles of operation, and automatic means responsive to a failure of the supply of heels for interrupting said driving connection during the c011- tinued operation of said poWer-mechanisin. ERASTUS E. VVINKLEY. 

